static inline int out_check_resent(const struct lu_env *env,
struct dt_device *dt,
struct dt_object *obj,
struct ptlrpc_request *req,
out_reconstruct_t reconstruct,
struct object_update_reply *reply,
int index)
{
if (likely(!(lustre_msg_get_flags(req->rq_reqmsg) & MSG_RESENT)))
return 0;
if (req_xid_is_last(req)) {
struct lsd_client_data *lcd;
/* XXX this does not support mulitple transactions yet, i.e.
* only 1 update RPC each time betwee MDTs */
lcd = req->rq_export->exp_target_data.ted_lcd;
req->rq_transno = lcd->lcd_last_transno;
req->rq_status = lcd->lcd_last_result;
if (req->rq_status != 0)
req->rq_transno = 0;
lustre_msg_set_transno(req->rq_repmsg, req->rq_transno);
lustre_msg_set_status(req->rq_repmsg, req->rq_status);
DEBUG_REQ(D_RPCTRACE, req, "restoring transno "LPD64"status %d",
req->rq_transno, req->rq_status);
reconstruct(env, dt, obj, reply, index);
return 1;
}
DEBUG_REQ(D_HA, req, "no reply for RESENT req (have "LPD64")",
req->rq_export->exp_target_data.ted_lcd->lcd_last_xid);
return 0;
}
int seq_handle(struct ptlrpc_request *req)
{
const struct lu_env *env;
struct seq_thread_info *info;
int rc;
env = req->rq_svc_thread->t_env;
LASSERT(env != NULL);
info = lu_context_key_get(&env->le_ctx, &seq_thread_key);
LASSERT(info != NULL);
seq_thread_info_init(req, info);
rc = seq_req_handle(req, env, info);
/* XXX: we don't need replay but MDT assign transno in any case,
* remove it manually before reply*/
lustre_msg_set_transno(req->rq_repmsg, 0);
seq_thread_info_fini(info);
return rc;
}
/* Shrink and/or grow reply buffers */
int mdt_fix_reply(struct mdt_thread_info *info)
{
struct req_capsule *pill = info->mti_pill;
struct mdt_body *body;
int md_size, md_packed = 0;
int acl_size;
int rc = 0;
ENTRY;
body = req_capsule_server_get(pill, &RMF_MDT_BODY);
LASSERT(body != NULL);
if (body->valid & (OBD_MD_FLDIREA | OBD_MD_FLEASIZE | OBD_MD_LINKNAME))
md_size = body->eadatasize;
else
md_size = 0;
acl_size = body->aclsize;
/* this replay - not send info to client */
if (info->mti_spec.no_create) {
md_size = 0;
acl_size = 0;
}
CDEBUG(D_INFO, "Shrink to md_size = %d cookie/acl_size = %d"
" MDSCAPA = %llx, OSSCAPA = %llx\n",
md_size, acl_size,
(unsigned long long)(body->valid & OBD_MD_FLMDSCAPA),
(unsigned long long)(body->valid & OBD_MD_FLOSSCAPA));
/*
&RMF_MDT_BODY,
&RMF_MDT_MD,
&RMF_ACL, or &RMF_LOGCOOKIES
(optional) &RMF_CAPA1,
(optional) &RMF_CAPA2,
(optional) something else
*/
/* MDT_MD buffer may be bigger than packed value, let's shrink all
* buffers before growing it */
if (info->mti_big_lmm_used) {
LASSERT(req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER));
/* free big lmm if md_size is not needed */
if (md_size == 0) {
info->mti_big_lmm_used = 0;
} else {
md_packed = req_capsule_get_size(pill, &RMF_MDT_MD,
RCL_SERVER);
LASSERT(md_packed > 0);
/* buffer must be allocated separately */
LASSERT(info->mti_attr.ma_lmm !=
req_capsule_server_get(pill, &RMF_MDT_MD));
req_capsule_shrink(pill, &RMF_MDT_MD, 0, RCL_SERVER);
}
} else if (req_capsule_has_field(pill, &RMF_MDT_MD, RCL_SERVER)) {
req_capsule_shrink(pill, &RMF_MDT_MD, md_size, RCL_SERVER);
}
if (req_capsule_has_field(pill, &RMF_ACL, RCL_SERVER))
req_capsule_shrink(pill, &RMF_ACL, acl_size, RCL_SERVER);
else if (req_capsule_has_field(pill, &RMF_LOGCOOKIES, RCL_SERVER))
req_capsule_shrink(pill, &RMF_LOGCOOKIES,
acl_size, RCL_SERVER);
if (req_capsule_has_field(pill, &RMF_CAPA1, RCL_SERVER) &&
!(body->valid & OBD_MD_FLMDSCAPA))
req_capsule_shrink(pill, &RMF_CAPA1, 0, RCL_SERVER);
if (req_capsule_has_field(pill, &RMF_CAPA2, RCL_SERVER) &&
!(body->valid & OBD_MD_FLOSSCAPA))
req_capsule_shrink(pill, &RMF_CAPA2, 0, RCL_SERVER);
/*
* Some more field should be shrinked if needed.
* This should be done by those who added fields to reply message.
*/
/* Grow MD buffer if needed finally */
if (info->mti_big_lmm_used) {
void *lmm;
LASSERT(md_size > md_packed);
CDEBUG(D_INFO, "Enlarge reply buffer, need extra %d bytes\n",
md_size - md_packed);
rc = req_capsule_server_grow(pill, &RMF_MDT_MD, md_size);
if (rc) {
/* we can't answer with proper LOV EA, drop flags,
* the rc is also returned so this request is
* considered as failed */
body->valid &= ~(OBD_MD_FLDIREA | OBD_MD_FLEASIZE);
/* don't return transno along with error */
lustre_msg_set_transno(pill->rc_req->rq_repmsg, 0);
} else {
/* now we need to pack right LOV/LMV EA */
lmm = req_capsule_server_get(pill, &RMF_MDT_MD);
if (info->mti_attr.ma_valid & MA_LOV) {
LASSERT(req_capsule_get_size(pill, &RMF_MDT_MD,
RCL_SERVER) ==
info->mti_attr.ma_lmm_size);
memcpy(lmm, info->mti_attr.ma_lmm,
info->mti_attr.ma_lmm_size);
} else if (info->mti_attr.ma_valid & MA_LMV) {
LASSERT(req_capsule_get_size(pill, &RMF_MDT_MD,
RCL_SERVER) ==
info->mti_attr.ma_lmv_size);
memcpy(lmm, info->mti_attr.ma_lmv,
info->mti_attr.ma_lmv_size);
}
}
/* update mdt_max_mdsize so clients will be aware about that */
if (info->mti_mdt->mdt_max_mdsize < info->mti_attr.ma_lmm_size)
info->mti_mdt->mdt_max_mdsize =
info->mti_attr.ma_lmm_size;
info->mti_big_lmm_used = 0;
}
RETURN(rc);
}
